公开(公告)号：US20240260311A1

公开(公告)日：2024-08-01

申请号：US18634934

申请日：2024-04-13

Applicant: LG Display Co., Ltd.

Inventor： YuSeon KHO ,  Yong-Su HAM ,  YongWoo LEE

IPC: H10K59/00 ,  G06F3/01 ,  H10K50/842 ,  H10N30/20

CPC classification number: H10K59/00 ,  G06F3/016 ,  H10K50/8426 ,  H10N30/204

Abstract: A display apparatus includes a display panel configured to display an image, a film actuator configured to vibrate the display panel, and a partition configured to surround the film actuator. The film actuator may include a plurality of vibration generating devices configured with a composite film. The plurality of vibration generating devices may be configured to have different expansion coefficients. The composite film may include a plurality of vibration portions configured to have a piezoelectric characteristic and a plurality of expansion portions configured to have flexibility and overlap with the plurality of vibration portions.

公开(公告)号：US20240260310A1

公开(公告)日：2024-08-01

申请号：US18634933

申请日：2024-04-13

Applicant: LG Display Co., Ltd.

Inventor： YuSeon KHO ,  Yong-Su HAM ,  YongWoo LEE

IPC: H10K59/00 ,  G06F3/01 ,  H10K50/842 ,  H10N30/20

CPC classification number: H10K59/00 ,  G06F3/016 ,  H10K50/8426 ,  H10N30/204

Abstract: A display apparatus includes a display panel configured to display an image and a film actuator configured to vibrate the display panel. The film actuator may include a plurality of vibration generating devices configured with a composite film. The plurality of vibration generating devices may be configured to have different expansion coefficients. The composite film may include a plurality of vibration portions configured to have a piezoelectric characteristic and a plurality of expansion portions configured to have flexibility and overlap with the plurality of vibration portions.

公开(公告)号：US20240098405A1

公开(公告)日：2024-03-21

申请号：US18515239

申请日：2023-11-20

Applicant: LG Display Co., Ltd.

Inventor： Yong-Su HAM ,  YongWoo LEE ,  YuSeon KHO

IPC: H04R1/28 ,  H04R3/00 ,  H04R17/00

CPC classification number: H04R1/2811 ,  H04R3/00 ,  H04R17/005 ,  H04R1/323

Abstract: A vibration apparatus comprises a lower vibration structure, an upper vibration structure on the lower vibration structure, and an adhesive member between the lower vibration structure and the upper vibration structure. The lower vibration structure and the upper vibration structure are configured to generate sound waves having different frequencies.

公开(公告)号：US20230217187A1

公开(公告)日：2023-07-06

申请号：US18086585

申请日：2022-12-21

Applicant: LG Display Co., Ltd. ,  Korea University Research and Business Foundation

Inventor： YongWoo LEE ,  SeungRyull PARK ,  Yong-Su HAM ,  YuSeon KHO ,  Seunghyun SUNG ,  Sahn NAHM ,  Dae-Su KIM ,  Hosung SHIN ,  Jae Min EUM ,  Su-Hwan GO

IPC: H04R17/00 ,  C04B35/495 ,  C04B35/64 ,  C04B35/626 ,  H10N30/853 ,  H10N30/097 ,  H04R1/02

CPC classification number: H04R17/00 ,  C04B35/495 ,  C04B35/64 ,  C04B35/6261 ,  H01L41/1873 ,  H01L41/43 ,  H04R1/028 ,  C04B2235/3255 ,  C04B2235/3248 ,  C04B2235/6027 ,  C04B2235/6567 ,  C04B2235/85 ,  C04B2235/765 ,  H04R2499/15

Abstract: A piezoelectric material composition, a method of manufacturing the same, a piezoelectric device, and apparatus including the piezoelectric device. The piezoelectric device may include a piezoelectric device layer including a first material and a second material surrounded by the first material, a first electrode portion disposed at a first surface of the piezoelectric device layer, and a second electrode portion disposed at a second surface of the piezoelectric device layer opposite to the first surface, wherein the piezoelectric device layer comprises a piezoelectric material composition represented by Chemical Formula 1: 0.96(NaaK1-a)(Nbb(T1-b))O3-(0.04-x)MZrO3-x(BicAg1-c)ZrO3+d mol % NaNbO3, wherein T is Sb or Ta, M is Sr, Ba or Ca, a is 0.4≤a≤0.6, b is 0.90≤b≤0.98, c is 0.4≤c≤0.6, d is 0≤d≤5.0, and x is 0≤x≤0.04 and wherein T is Sb or Ta and M is Sr, Ba, or Ca.

公开(公告)号：US20220279259A1

公开(公告)日：2022-09-01

申请号：US17746959

申请日：2022-05-18

Applicant: LG Display Co., Ltd.

Inventor： Taeheon KIM ,  Chiwan KIM ,  Sung-Eui SHIN ,  YongWoo LEE ,  Kyungyeol RYU ,  YuSeon KHO ,  YongGyoon JANG

IPC: H04R1/02 ,  H04R17/00 ,  H01L41/09 ,  H01L27/20 ,  H01L41/053 ,  H01L41/193

Abstract: A display apparatus includes a display panel configured to display an image and a sound generating device on a rear surface of the display panel. The sound generating device is configured to vibrate the display panel to generate sound. The sound generating device includes a first structure and a first passivation layer on one side of the first structure, at least a portion of the first passivation layer having a non-flat shape.

公开(公告)号：US20220182766A1

公开(公告)日：2022-06-09

申请号：US17676816

申请日：2022-02-22

Applicant: LG Display Co., Ltd.

Inventor： Sung Eui SHIN ,  Taeheon KIM ,  Kyungyeol RYU ,  YongGyoon JANG ,  Chiwan KIM ,  YongWoo LEE ,  YuSeon KHO

IPC: H04R17/00 ,  H04R1/02 ,  H04R7/04

Abstract: A display apparatus including a flexible vibration module and a method of manufacturing the flexible vibration module are provided. A display apparatus includes: a display panel configured to display an image, and a flexible vibration module on a rear surface of the display panel, the flexible vibration module configured to vibrate the display panel, the flexible vibration module including: a plurality of first portions having a piezoelectric characteristic, and a plurality of second portions respectively between pairs of the plurality of first portions, the plurality of second portions having flexibility.

公开(公告)号：US20200314556A1

公开(公告)日：2020-10-01

申请号：US16443090

申请日：2019-06-17

Applicant: LG Display Co., Ltd.

Inventor： YongWoo LEE ,  Yong-Su HAM ,  Taeheon Kim ,  Sung-Eui SHIN

IPC: H04R17/00 ,  H01L41/047 ,  H01L41/08 ,  H01L41/09 ,  H01L41/37 ,  H01L41/083

Abstract: A flexible vibration module is disclosed. The flexible vibration module includes a piezoelectric composite layer, including: a plurality of piezoelectric portions each having a piezoelectric characteristic, where at least two of the plurality of piezoelectric portions have different sizes; and a flexible portion between the plurality of piezoelectric portions.

公开(公告)号：US20200209973A1

公开(公告)日：2020-07-02

申请号：US16720587

申请日：2019-12-19

Applicant: LG Display Co., Ltd.

Inventor： Chiwan KIM ,  Taeheon KIM ,  Sung-Eui SHIN ,  YongWoo LEE ,  Kyungyeol Ryu ,  YuSeon KHO ,  YongGyoon JANG

IPC: G06F3/01 ,  B06B1/06 ,  H01L27/32 ,  G02F1/1368 ,  G02F1/1333 ,  G06F3/041 ,  B60K37/04

Abstract: The present disclosure relates to a vibration generation device, a display apparatus including the vibration generation device, and a vehicle including the vibration generation device. A vibration generation device includes a piezoelectric ceramic part having a certain interval, a piezoelectric material layer between the piezoelectric ceramic parts, and an electrode part configured to provide electric field to one or more of the piezoelectric ceramic part and the piezoelectric material layer.

公开(公告)号：US20200154214A1

公开(公告)日：2020-05-14

申请号：US16654562

申请日：2019-10-16

Applicant: LG Display Co., Ltd.

Inventor： YongGyoon JANG ,  Chiwan KIM ,  Taeheon KIM ,  Sung-Eui SHIN ,  YongWoo LEE ,  Kyungyeol RYU ,  YuSeon KHO

IPC: H04R17/00 ,  H04R1/02

Abstract: A display apparatus includes a display panel including configured to display an image and a sound generating device on a rear surface of the display panel, the sound generating device being configured to vibrate the display panel to generate sound. The sound generating device includes a first structure and a second structure over or under the first structure, the second structure including a first part having a piezoelectric characteristic and a second part between adjacent first parts to have flexibility.

公开(公告)号：US20180164889A1

公开(公告)日：2018-06-14

申请号：US15822740

申请日：2017-11-27

Applicant: LG DISPLAY CO., LTD.

Inventor： Yong-Su HAM ,  Taeheon KIM ,  YongWoo LEE ,  Kyungyeol RYU ,  YuSeon KHO ,  MyungJin LIM

IPC: G06F3/01 ,  G06F3/0488 ,  H01L41/083 ,  H01L41/253 ,  H01L41/27

Abstract: Provided are a touch sensitive element and a manufacturing method thereof. The manufacturing method for the touch sensitive element according to an embodiment of the present disclosure includes forming an electroactive polymer coating layer by applying an electroactive polymer solution on a substrate; forming an electroactive layer by heating and pressurizing the electroactive polymer coating layer using a hot press roller; and forming an electrode on the electroactive layer.